Answer:
Archimedes' principle
Explanation:
An object completely submerged in a fluid displaces its own volume of fluid is postulate from the Archimedes' principle.
- If a fluid, the liquid supports the body by a buoyant force.
- The buoyant force is the reaction to the imposed weight exerted by the object placed in the medium.
- The upward force on the body is the upthrust.
